11615660 has 48 divisors (see below), whose sum is σ = 28848960. Its totient is φ = 3843840.

The previous prime is 11615651. The next prime is 11615663. The reversal of 11615660 is 6651611.

11615660 = 98² + 99² + ... + 329².

It is not an unprimeable number, because it can be changed into a prime (11615663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2630 + ... + 5490.

It is an arithmetic number, because the mean of its divisors is an integer number (601020).

Almost surely, 2^11615660 is an apocalyptic number.

11615660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11615660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14424480).

11615660 is an abundant number, since it is smaller than the sum of its proper divisors (17233300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11615660 is a wasteful number, since it uses less digits than its factorization.

11615660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906 (or 2904 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 11615660 is about 3408.1754649666. The cubic root of 11615660 is about 226.4720599946.

The spelling of 11615660 in words is "eleven million, six hundred fifteen thousand, six hundred sixty".